spit up

verb

To regurgitate or vomit.

“The baby spat up her breakfast.”

Similar
cough uppony upexpectoratecough outspit out
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Meanings

verbspit up (third-person singular simple present spits up, present participle spitting up, simple past and past participle spat up or spit up)

present singular third person spits up · participle present spitting up · participle past spat up · past spat up

  1. especiallyintransitivetransitiveTo regurgitate or vomit.

    The baby spat up her breakfast.

    2 more examples

    Don't show the dead bird to him; he'll just spit up.

    Usually baby doesn't need to be burped if (1) he consistently takes his usual amount of formula, gradually increasing his capacity as the weeks go by and (2) if he hasn't spit up when put down unburped after most feedings.

    1968, Robert Webster Watson, Why Not Have Your Second Baby First?, page 46

Synonyms & antonyms

verbgive reluctantly

Similar
cough uppony up
Broader
give

verbdischarge (phlegm or sputum) from the lungs and out of the mouth

Similar
expectoratecough upcough outspit out
Broader
exhaustdischargeexpel
Also see
cough outcough upexpectoratepony upspit out

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

spit up. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/spit%20up

MLA

“spit up.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/spit%20up. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “spit up,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/spit%20up.

Source: spit up on Wiktionary, CC BY-SA 4.0.